Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

General Surgery

Nicholas J. Koullas, DO

Works at hospitals in Decatur, GA · Atlanta, GA · Georgia

Summary

Nicholas J. Koullas, DO (General Surgery) is listed by Medicare at 2 hospitals in Decatur, GA and Atlanta, GA. NPI 1407415672. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Nicholas J. Koullas, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

General SurgeryPrimary specialty
YesAccepts Medicare assignment
11Years since medical school (graduated 2015)
Alabama College Of Osteopathic MedicineMedical school
MaleGender (as listed)
The Emory Clinic IncGroup practice

Quick answers

Which hospitals does Nicholas J. Koullas work at?
Medicare's official clinician data lists Nicholas J. Koullas at 2 hospitals: Emory Decatur Hospital and Saint Joseph's Hospital of Atlanta, Inc. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Nicholas J. Koullas see patients?
Medicare's clinician data lists 1 practice location in Atlanta, GA. Call before your visit to confirm the address.
What is Nicholas J. Koullas's specialty?
Medicare lists General Surgery as the primary specialty.
Does Nicholas J. Koullas accept Medicare assignment?
Yes. Medicare's clinician data says Nicholas J. Koullas accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
What is the phone number for Nicholas J. Koullas?
(404) 778-7525, as listed in official Medicare / NPI Registry data.
What is Nicholas J. Koullas's NPI number?
1407415672. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Nicholas J. Koullas works

Medicare's Facility Affiliation Data lists Nicholas J. Koullas at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Nicholas J. Koullas is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Nicholas J. Koullas as a member of this group (CMS data updated 2026-10-02).

  • The Emory Clinic Inc3,568 clinicians in the group

Specialties

Find other General Surgery doctors in Georgia →

Other general surgeons in Atlanta

Clinicians with the same Medicare primary specialty in Atlanta, GA — not a recommendation.

All general surgeons in Atlanta →

Clinician information

CredentialDO
Medical schoolAlabama College Of Osteopathic Medicine
Graduation year2015
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1407415672
CorrectionsReport an error or suggest an update →

Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.

Sources

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians